Investigations on the ATPase Activities and Cadmium Uptake in Freshwater Fish Oreochromis niloticus Following Exposures to Cadmium in Increased Salinity

Berna Kulac; Gülüzar Atli; Mustafa Canli

Article Details

Investigations on the ATPase Activities and Cadmium Uptake in Freshwater Fish Oreochromis niloticus Following Exposures to Cadmium in Increased Salinity

Authors:

Berna Kulac | Gülüzar Atli | Mustafa Canli

Publisher:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Journal:

Turkish Journal of Fisheries and Aquatic Sciences 2012 Vol.12 Issue 4

Document Type:

Article

Publication Date:

7/2012

Document Language:

Turkish

Document ID (Org No.):

2000838261

Frequency:

Quarterly

pISSN:

1303-2712

Keywords:

Abstract:

 

Anthropogenic activities can increase the salinity of freshwaters. Thus, freshwater fish Oreochromis niloticus were exposed to Cd (1.0 µg/mL) in increased salinities (0, 2, 4 and 8 ppt) for 0, 1, 3, 7 and 14 days. Following single and combine exposures to salinity and Cd, Na+/K+-ATPase, Mg2+-ATPase, Ca2+-ATPase activities were measured in the gill, kidney and intestine. In general, salinity alone exposures increased Na+/K+-ATPase activity in the gill and intestine while there were fewer alterations in the kidney. Mg2+-ATPase activity significantly altered in the intestine and kidney. Ca2+-ATPase in the tissues significantly decreased, the kidney showing the most decrease. Salinity+Cd combine exposures decreased Na+/K+-ATPase activity in 2 ppt medium in the gill while the activity increased at 8 ppt medium. Na+/K+-ATPase activity in the intestine decreased in relation to salinity increase, though there was no significant decrease in the kidney. Mg2+-ATPase and Ca2+-ATPase activities showed a declining trend with the increase in salinity. Cd accumulation in the tissues decreased as the salinity of medium increased, though accumulation in the gill increased regardless of salinity increase at the longest exposure period. Results emphasized necessity of measuring fish ATPase activities in evaluation of data from environmental monitoring, as they are highly sensitive to the changes in the aquatic medium.   	 	 		 .

 

Anthropogenic activities can increase the salinity of freshwaters. Thus, freshwater fish Oreochromis niloticus were exposed to Cd (1.0 µg/mL) in increased salinities (0, 2, 4 and 8 ppt) for 0, 1, 3, 7 and 14 days. Following single and combine exposures to salinity and Cd, Na+/K+-ATPase, Mg2+-ATPase, Ca2+-ATPase activities were measured in the gill, kidney and intestine. In general, salinity alone exposures increased Na+/K+-ATPase activity in the gill and intestine while there were fewer alterations in the kidney. Mg2+-ATPase activity significantly altered in the intestine and kidney. Ca2+-ATPase in the tissues significantly decreased, the kidney showing the most decrease. Salinity+Cd combine exposures decreased Na+/K+-ATPase activity in 2 ppt medium in the gill while the activity increased at 8 ppt medium. Na+/K+-ATPase activity in the intestine decreased in relation to salinity increase, though there was no significant decrease in the kidney. Mg2+-ATPase and Ca2+-ATPase activities showed a declining trend with the increase in salinity. Cd accumulation in the tissues decreased as the salinity of medium increased, though accumulation in the gill increased regardless of salinity increase at the longest exposure period. Results emphasized necessity of measuring fish ATPase activities in evaluation of data from environmental monitoring, as they are highly sensitive to the changes in the aquatic medium.   	 	 		 .

Article Details

Investigations on the ATPase Activities and Cadmium Uptake in Freshwater Fish Oreochromis niloticus Following Exposures to Cadmium in Increased Salinity

Authors:

Berna Kulac | Gülüzar Atli | Mustafa Canli

Publisher:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Journal:

Turkish Journal of Fisheries and Aquatic Sciences 2012 Vol.12 Issue 4

Document Type:

Article

Publication Date:

7/2012

Document Language:

Turkish

Document ID (Org No.):

2000838261

Frequency:

Quarterly

pISSN:

1303-2712

ATPase

tilapia

metal

os

Issues

Article Details

Investigations on the ATPase Activities and Cadmium Uptake in Freshwater Fish Oreochromis niloticus Following Exposures to Cadmium in Increased Salinity

Authors: Berna Kulac | Gülüzar Atli | Mustafa Canli

Publisher: Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Journal: Turkish Journal of Fisheries and Aquatic Sciences 2012 Vol.12 Issue 4

Document Type: Article

Publication Date: 7/2012

Document Language: Turkish

Document ID (Org No.): 2000838261

Frequency: Quarterly

pISSN: 1303-2712

ATPase

tilapia

metal

os

Issues

Authors:

Berna Kulac | Gülüzar Atli | Mustafa Canli

Publisher:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Journal:

Turkish Journal of Fisheries and Aquatic Sciences 2012 Vol.12 Issue 4

Document Type:

Article

Publication Date:

7/2012

Document Language:

Turkish

Document ID (Org No.):

2000838261

Frequency:

Quarterly

pISSN:

1303-2712